Quote Originally Posted by fefenin View Post
yes as i said my changing value is not large enough it is like only 2 volts variation a low angular speed (like my head moving) so i m losing 3volts

i ll try with the resistive divider but i heard it is very bad for the temperature drifting....??

and i have a reference voltage with my sensor (pin 3) it is like 2.4v very accurate do you think i can use that in a way as a vref+ and - (with diodes or something)

thank s anyways
resistive divider - I would think that as long as you have 3 resistors, same manufacturer, same age, same values, etc.etc., I would think that they'd drift fairly equally.

You may have a 2.4v Vref on your sensor, but you still have to be able to get a 'spread' at the PIC.

What's the fastest you think this sensor will ever turn (I guess the real question is how fast can you spin head?)?